Hair straightening is a popular beauty practice that involves using heat or chemical treatments to transform curly or wavy hair into a smooth, sleek style. Common methods include using a flat iron, which applies heat directly to the hair, or chemical relaxers that alter the hair's structure. Many people choose hair straightening for various reasons, such as achieving a polished look for special occasions or managing frizz in humid weather. While it can enhance appearance, it's essential to use heat protectants and follow proper techniques to minimize damage and maintain hair health.